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-rw-r--r--src/ConfigParser.cpp2
-rw-r--r--src/OutputUHD.cpp21
-rw-r--r--src/OutputUHD.h15
-rw-r--r--src/OutputUHDFeedback.cpp245
-rw-r--r--src/OutputUHDFeedback.h114
5 files changed, 375 insertions, 22 deletions
diff --git a/src/ConfigParser.cpp b/src/ConfigParser.cpp
index b7649df..8892642 100644
--- a/src/ConfigParser.cpp
+++ b/src/ConfigParser.cpp
@@ -255,6 +255,8 @@ static void parse_configfile(
outputuhd_conf.maxGPSHoldoverTime = pt.get("uhdoutput.max_gps_holdover_time", 0);
+ outputuhd_conf.dpdFeedbackServerPort = pt.get<long>("uhdoutput.dpd_port", 0);
+
mod_settings.outputuhd_conf = outputuhd_conf;
mod_settings.useUHDOutput = 1;
}
diff --git a/src/OutputUHD.cpp b/src/OutputUHD.cpp
index d78c4bf..6dc8878 100644
--- a/src/OutputUHD.cpp
+++ b/src/OutputUHD.cpp
@@ -169,8 +169,6 @@ OutputUHD::OutputUHD(
RC_ADD_PARAMETER(muting, "Mute the output by stopping the transmitter");
RC_ADD_PARAMETER(staticdelay, "Set static delay (uS) between 0 and 96000");
- // TODO: find out how to use boost::bind to give the logger to the
- // uhd_msg_handler
uhd::msg::register_handler(uhd_msg_handler);
uhd::set_thread_priority_safe();
@@ -286,13 +284,9 @@ OutputUHD::OutputUHD(
SetDelayBuffer(myConf.dabMode);
- MDEBUG("OutputUHD:UHD ready.\n");
-}
+ uhdFeedback.setup(myUsrp, myConf.dpdFeedbackServerPort);
-
-OutputUHD::~OutputUHD()
-{
- MDEBUG("OutputUHD::~OutputUHD() @ %p\n", this);
+ MDEBUG("OutputUHD:UHD ready.\n");
}
@@ -426,12 +420,11 @@ int OutputUHD::process(Buffer* dataIn)
"OutputUHD: dropping one frame with invalid FCT";
}
else {
- while (true) {
- size_t num_frames = uwd.frames.push_wait_if_full(frame,
- FRAMES_MAX_SIZE);
- etiLog.log(trace, "UHD,push %zu", num_frames);
- break;
- }
+ uhdFeedback.set_tx_frame(frame.buf, frame.ts);
+
+ size_t num_frames = uwd.frames.push_wait_if_full(frame,
+ FRAMES_MAX_SIZE);
+ etiLog.log(trace, "UHD,push %zu", num_frames);
}
}
diff --git a/src/OutputUHD.h b/src/OutputUHD.h
index d42245f..1246fc5 100644
--- a/src/OutputUHD.h
+++ b/src/OutputUHD.h
@@ -2,7 +2,7 @@
Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Her Majesty the
Queen in Right of Canada (Communications Research Center Canada)
- Copyright (C) 2016
+ Copyright (C) 2017
Matthias P. Braendli, matthias.braendli@mpb.li
http://opendigitalradio.org
@@ -56,6 +56,7 @@ DESCRIPTION:
#include "TimestampDecoder.h"
#include "RemoteControl.h"
#include "ThreadsafeQueue.h"
+#include "OutputUHDFeedback.h"
#include <stdio.h>
#include <sys/types.h>
@@ -210,14 +211,15 @@ struct OutputUHDConfig {
// static delay in microseconds
int staticDelayUs = 0;
-};
+ // TCP port on which to serve TX and RX samples for the
+ // digital pre distortion learning tool
+ uint16_t dpdFeedbackServerPort = 0;
+};
class OutputUHD: public ModOutput, public RemoteControllable {
public:
-
OutputUHD(OutputUHDConfig& config);
- ~OutputUHD();
int process(Buffer* dataIn);
@@ -235,11 +237,7 @@ class OutputUHD: public ModOutput, public RemoteControllable {
virtual const std::string get_parameter(
const std::string& parameter) const;
-
protected:
- OutputUHD(const OutputUHD& other) = delete;
- OutputUHD& operator=(const OutputUHD& other) = delete;
-
EtiSource *myEtiSource;
OutputUHDConfig& myConf;
uhd::usrp::multi_usrp::sptr myUsrp;
@@ -248,6 +246,7 @@ class OutputUHD: public ModOutput, public RemoteControllable {
bool gps_fix_verified;
struct UHDWorkerData uwd;
UHDWorker worker;
+ OutputUHDFeedback uhdFeedback;
private:
// Resize the internal delay buffer according to the dabMode and
diff --git a/src/OutputUHDFeedback.cpp b/src/OutputUHDFeedback.cpp
new file mode 100644
index 0000000..dfe0f74
--- /dev/null
+++ b/src/OutputUHDFeedback.cpp
@@ -0,0 +1,245 @@
+/*
+ Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Her Majesty the
+ Queen in Right of Canada (Communications Research Center Canada)
+
+ Copyright (C) 2017
+ Matthias P. Braendli, matthias.braendli@mpb.li
+
+ http://opendigitalradio.org
+
+DESCRIPTION:
+ This presents a TCP socket to an external tool which calculates
+ a Digital Predistortion model from a short sequence of transmit
+ samples and corresponding receive samples.
+*/
+
+/*
+ This file is part of ODR-DabMod.
+
+ ODR-DabMod is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ ODR-DabMod is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with ODR-DabMod. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <vector>
+#include <uhd/types/stream_cmd.hpp>
+#include <sys/socket.h>
+#include "OutputUHDFeedback.h"
+#include "Utils.h"
+
+using namespace std;
+typedef std::complex<float> complexf;
+
+OutputUHDFeedback::OutputUHDFeedback()
+{
+ running = false;
+}
+
+void OutputUHDFeedback::setup(uhd::usrp::multi_usrp::sptr usrp, uint16_t port)
+{
+ myUsrp = usrp;
+ burstRequest.state = BurstRequestState::None;
+
+ if (port) {
+ m_port = port;
+ running = true;
+
+ rx_burst_thread = boost::thread(&OutputUHDFeedback::ReceiveBurstThread, this);
+ burst_tcp_thread = boost::thread(&OutputUHDFeedback::ServeFeedbackThread, this);
+ }
+}
+
+OutputUHDFeedback::~OutputUHDFeedback()
+{
+ running = false;
+ rx_burst_thread.join();
+ burst_tcp_thread.join();
+}
+
+void OutputUHDFeedback::set_tx_frame(
+ const std::vector<uint8_t> &buf,
+ const struct frame_timestamp& ts)
+{
+ boost::mutex::scoped_lock lock(burstRequest.mutex);
+
+ if (burstRequest.state == BurstRequestState::SaveTransmitFrame) {
+ const size_t n = std::min(
+ burstRequest.frame_length * sizeof(complexf), buf.size());
+
+ burstRequest.tx_samples.clear();
+ burstRequest.tx_samples.resize(n);
+ copy(buf.begin(), buf.begin() + n, burstRequest.tx_samples.begin());
+
+ burstRequest.tx_second = ts.timestamp_sec;
+ burstRequest.tx_pps = ts.timestamp_pps;
+
+ // Prepare the next state
+ burstRequest.rx_second = ts.timestamp_sec;
+ burstRequest.rx_pps = ts.timestamp_pps;
+ burstRequest.state = BurstRequestState::SaveReceiveFrame;
+
+ lock.unlock();
+ burstRequest.mutex_notification.notify_one();
+ }
+ else {
+ lock.unlock();
+ }
+}
+
+void OutputUHDFeedback::ReceiveBurstThread()
+{
+ set_thread_name("uhdreceiveburst");
+
+ uhd::stream_args_t stream_args("fc32"); //complex floats
+ auto rxStream = myUsrp->get_rx_stream(stream_args);
+
+ while (running) {
+ boost::mutex::scoped_lock lock(burstRequest.mutex);
+ while (burstRequest.state != BurstRequestState::SaveReceiveFrame) {
+ if (not running) break;
+ burstRequest.mutex_notification.wait(lock);
+ }
+
+ if (not running) break;
+
+ uhd::stream_cmd_t cmd(
+ uhd::stream_cmd_t::stream_mode_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+ cmd.num_samps = burstRequest.frame_length;
+ cmd.stream_now = false;
+
+ double pps = burstRequest.rx_pps / 16384000.0;
+ cmd.time_spec = uhd::time_spec_t(burstRequest.rx_second, pps);
+
+ rxStream->issue_stream_cmd(cmd);
+
+ uhd::rx_metadata_t md;
+ burstRequest.rx_samples.resize(burstRequest.frame_length * sizeof(complexf));
+ rxStream->recv(&burstRequest.rx_samples[0], burstRequest.frame_length, md);
+
+ burstRequest.rx_second = md.time_spec.get_full_secs();
+ burstRequest.rx_pps = md.time_spec.get_frac_secs() * 16384000.0;
+
+ burstRequest.state = BurstRequestState::Acquired;
+
+ lock.unlock();
+ burstRequest.mutex_notification.notify_one();
+ }
+}
+
+void OutputUHDFeedback::ServeFeedbackThread()
+{
+ set_thread_name("uhdservefeedback");
+
+ int server_sock = -1;
+ try {
+ if ((server_sock = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
+ throw std::runtime_error("Can't create TCP socket");
+ }
+
+ struct sockaddr_in addr;
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(m_port);
+ addr.sin_addr.s_addr = htonl(INADDR_ANY);
+
+ if (bind(server_sock, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
+ throw std::runtime_error("Can't bind TCP socket");
+ }
+
+ if (listen(server_sock, 1) < 0) {
+ throw std::runtime_error("Can't listen TCP socket");
+ }
+
+ while (running) {
+ struct sockaddr_in client;
+ socklen_t client_len = sizeof(client);
+ int client_sock = accept(server_sock,
+ (struct sockaddr*)&client, &client_len);
+
+ if (client_sock < 0) {
+ throw runtime_error("Could not establish new connection");
+ }
+
+ while (running) {
+ uint8_t request_version = 0;
+ int read = recv(client_sock, &request_version, 1, 0);
+ if (!read) break; // done reading
+ if (read < 0) {
+ etiLog.level(info) <<
+ "DPD Feedback Server Client read request verson failed";
+ }
+
+ if (request_version != 1) {
+ etiLog.level(info) << "DPD Feedback Server wrong request version";
+ break;
+ }
+
+ uint32_t num_samples = 0;
+ read = recv(client_sock, &num_samples, 4, 0);
+ if (!read) break; // done reading
+ if (read < 0) {
+ etiLog.level(info) <<
+ "DPD Feedback Server Client read num samples failed";
+ }
+
+ // We are ready to issue the request now
+ {
+ boost::mutex::scoped_lock lock(burstRequest.mutex);
+ burstRequest.frame_length = num_samples;
+ burstRequest.state = BurstRequestState::SaveTransmitFrame;
+
+ lock.unlock();
+ }
+
+ // Wait for the result to be ready
+ boost::mutex::scoped_lock lock(burstRequest.mutex);
+ while (burstRequest.state != BurstRequestState::Acquired) {
+ if (not running) break;
+ burstRequest.mutex_notification.wait(lock);
+ }
+
+ burstRequest.state = BurstRequestState::None;
+ lock.unlock();
+
+ if (send(client_sock,
+ &burstRequest.tx_second,
+ sizeof(burstRequest.tx_second),
+ 0) < 0) {
+ etiLog.level(info) <<
+ "DPD Feedback Server Client send tx_second failed";
+ break;
+ }
+
+ if (send(client_sock,
+ &burstRequest.tx_pps,
+ sizeof(burstRequest.tx_pps),
+ 0) < 0) {
+ etiLog.level(info) <<
+ "DPD Feedback Server Client send tx_pps failed";
+ break;
+ }
+
+#warning "Send buf"
+ }
+
+ close(client_sock);
+ }
+ }
+ catch (runtime_error &e) {
+ etiLog.level(error) << "DPD Feedback Server fault: " << e.what();
+ }
+
+ running = false;
+
+ if (server_sock != -1) {
+ close(server_sock);
+ }
+}
diff --git a/src/OutputUHDFeedback.h b/src/OutputUHDFeedback.h
new file mode 100644
index 0000000..31f7547
--- /dev/null
+++ b/src/OutputUHDFeedback.h
@@ -0,0 +1,114 @@
+/*
+ Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Her Majesty the
+ Queen in Right of Canada (Communications Research Center Canada)
+
+ Copyright (C) 2017
+ Matthias P. Braendli, matthias.braendli@mpb.li
+
+ http://opendigitalradio.org
+
+DESCRIPTION:
+ This presents a TCP socket to an external tool which calculates
+ a Digital Predistortion model from a short sequence of transmit
+ samples and corresponding receive samples.
+*/
+
+/*
+ This file is part of ODR-DabMod.
+
+ ODR-DabMod is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ ODR-DabMod is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with ODR-DabMod. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef HAVE_OUTPUT_UHD
+
+#include <uhd/utils/thread_priority.hpp>
+#include <uhd/utils/safe_main.hpp>
+#include <uhd/usrp/multi_usrp.hpp>
+#include <boost/thread.hpp>
+#include <memory>
+#include <string>
+
+#include "Log.h"
+#include "TimestampDecoder.h"
+
+enum class BurstRequestState {
+ None, // To pending request
+ SaveTransmitFrame, // The TX thread has to save an outgoing frame
+ SaveReceiveFrame, // The RX thread has to save an incoming frame
+ Acquired, // Both TX and RX frames are ready
+};
+
+struct UHDReceiveBurstRequest {
+ // All fields in this struct are protected
+ mutable boost::mutex mutex;
+ boost::condition_variable mutex_notification;
+
+ BurstRequestState state;
+
+ // In the SaveTransmit states, frame_length samples are saved into
+ // the vectors
+ size_t frame_length;
+
+ // The timestamp of the first sample of the TX buffers
+ uint32_t tx_second;
+ uint32_t tx_pps; // in units of 1/16384000s
+
+ std::vector<uint8_t> tx_samples;
+
+ // The timestamp of the first sample of the RX buffers
+ uint32_t rx_second;
+ uint32_t rx_pps;
+
+ std::vector<uint8_t> rx_samples;
+};
+
+
+class OutputUHDFeedback {
+ public:
+ OutputUHDFeedback();
+ OutputUHDFeedback(const OutputUHDFeedback& other) = delete;
+ OutputUHDFeedback& operator=(const OutputUHDFeedback& other) = delete;
+ ~OutputUHDFeedback();
+
+ void setup(uhd::usrp::multi_usrp::sptr usrp, uint16_t port);
+
+ void set_tx_frame(const std::vector<uint8_t> &buf,
+ const struct frame_timestamp& ts);
+
+
+ private:
+ // Thread that reacts to burstRequests and receives from the USRP
+ void ReceiveBurstThread(void);
+
+ // Thread that listens for requests over TCP to get TX and RX feedback
+ void ServeFeedbackThread(void);
+
+ boost::thread rx_burst_thread;
+ boost::thread burst_tcp_thread;
+
+ UHDReceiveBurstRequest burstRequest;
+
+ bool running = false;
+ uint16_t m_port = 0;
+ uhd::usrp::multi_usrp::sptr myUsrp;
+};
+
+
+#endif // HAVE_OUTPUT_UHD
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